WednesdaySeptember 24, 2025

Constellation touts near-perfect summer energy reliability

QC charts 98.48% reliability despite hot, wet season
By: Kenda Burrows|September 24, 2025
|3 min read
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    • Constellation’s Quad Cities Clean Energy Center’s two nuclear reactors at Cordova, Illinois, can produce enough electricity to power more than 1 million homes. CREDIT CONSTELLATION

    During a summer of lengthy heatwaves marked by record-breaking torrential rains and high humidity, Constellation reported this month that its nationwide fleet of emissions-free nuclear clean energy centers ran at nearly full power 98.8% of the time.

    The numbers here in the Quad Cities, which is served by the two nuclear reactors at Constellation’s Cordova, Illinois, location tell a…

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